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Finding the Fourth Proportional to 323,080.11, 484,620.03 and 86,416.65

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Solution

The fourth proportional to 323,080.11, 484,620.03 and 86,416.65 is: 129,624.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,080.11 : 484,620.03 = 86,416.65 : x
  2. Step 2: Convert to fraction form
    323,080.11/484,620.03 = 86,416.65/x
  3. Step 3: Cross multiply
    323,080.11x = 484,620.03 × 86,416.65
  4. Step 4: Simplify right side
    323,080.11x = 41,879,239,515.50
  5. Step 5: Solve for x
    x = 41,879,239,515.50/323,080.11
  6. Step 6: Final answer
    x = 129,624.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.